A:Answer Hi cheryl6510, Yes, you can change the paper size. The method depends on which smart phone and app you are using. With an iPhone and the built-in AirPrint print service, there is a print option screen that includes a Paper size selection option. If you are using the free Epson Smart Panel app on an iPhone or Android phone, once you select the document or photo you tap the gear symbol to open the Print Settings screen. Then use the Paper Size selection to change the paper size. Regards, Mark - The Epson Team.